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| Author | Topic:How do I figure shelf life based on water activity? | 2856 Views |
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How do I figure shelf life based on water activity?
16 August 2010 at 11:58am Last edited: 8 October 2010 9:46am
We are currently using a water activity reader to help us determine if our product would be shelf stable by ensuring our products are within a determined range. However, we have yet to determine the actual shelf life. How would we do so? I came across this formula on Wikipedia: "Estimated mold-free shelf life in days at 21° C MFSL=10˄7.91-8.1aw" Is this accurate information to calculate our shelf life?
Also, If I adjusted the temperature to 22° or 23° C, what needs to be changed in the formula?
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Re: How do I figure shelf life based on water activity?
16 August 2010 at 3:45pm Last edited: 8 October 2010 9:46am
MariaG,
You have posed a very complex question that raises another question. What is the determinant that will end shelf life? We have to begin with that question so we know what we are trying to control. Of course there are many factors that go into determining shelf life and many of those factors will be presented/discussed in a virtual seminar to be given on Wednesday, August 25, 2010 titled SHELF LIFE PREDICITION WEBCAST. You can sign up for the virtual seminar at:
http://www.aqualab.com/basics-of-water-activity-virtual-seminar-sign-up-now-3/
More information about water activity related processes can be found at www.aqualab.com
Hope this helps,
G. Todd
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